Archiplanet

WIKI source
http://www.archiplanet.org/

Infolink AU

http://www.infolink.com.au

Archidose

http://www.archidose.org/

Architects USA Database over 20 000 members

http://www.architectsusa.com

RIBA

http://www.architecture.com/

Arch guide

http://www.nav.be

Archinect

http://www.archinect.com/

Architecture Page

http://www.architecture-page.com